*{
    box-sizing: border-box;
}
body{
    margin:0;
}
#app{
    margin:3rem calc( 50% - 400px );
}
.my-body{
    width:800px;
    height:800px;
    margin:1rem calc( 50% - 400px );
}
.td{
    width:40px;
    height:40px;
    border: 1px solid #ddd;
    float:left;
    cursor: pointer;
    text-align: center;
    line-height: 40px;
    user-select: none;
}
@media screen and (max-width: 800px)  {
    #app{
        margin:0;
    }
    .my-body{
        width:100%;
        height: auto;
        margin:0;
    }
    .td{
        width:16.666vw;
        height:16.666vw;
        line-height: 16.666vw;
    }
    .title-row{
        margin:0;
    }
}
.td img{
    max-width:100%;
    height:100%;
}
.td-had{
    background:orange;
    color:white;
}
.cupple{
    background:rgb(240, 212, 136);
}
.now{
    border-color:palegreen;
    background:palegreen;
}
.line{
    background:yellow;
}
.title-row{
    margin-bottom:1rem;
}
